The 11.2GWh of residential battery capacity now equals the volume of utility-scale battery storage added to the National Electricity Market (NEM) over the past 12 months.
According to the Australian Energy Market Operator (AEMO), 4,445MW and 11,219MWh of new large-scale batteries were commissioned in the 12 months to 31 March, more than doubling total installed battery storage in the NEM.
The rapid deployment of home batteries has coincided with changes to the program’s subsidy structure.
Rebate adjustments that came into effect on 1 May favour smaller battery systems over larger installations, with average battery size declining from approximately 28kWh to 25kWh following the policy change.
The programme has faced criticism over equity concerns, with research indicating that wealthier households in metropolitan areas have been the primary beneficiaries of the subsidy scheme.
However, the tiered subsidy structure introduced in May aims to address fairness concerns by reducing support for larger systems, which are typically installed by higher-income households.
Australia’s Cheaper Home Batteries Program
The Australian government launched the Cheaper Home Batteries Program subsidy last year following the 2025 federal election.
Initial estimates of AU$2.3 billion (US$1.63 billion) in support through the scheme grew to AU$7.2 billion by 2030, representing more than a threefold increase from the original projections announced.
By November 2025, roughly 8,000 applications per week were being processed through the scheme, which provides approximately 30% discounts on the upfront cost of home battery systems.
In early March, rumours began circulating that the government was exploring additional modifications to its Cheaper Home Batteries Program, including the possibility of an early wind-up, in the May budget.
Those rumours appeared to be just that, as the subsidy was not altered; however, the same cannot be said for various other clean energy programmes, such as the Battery Breakthrough Initiative, with the government announcing it would claw back AU$1.3 billion in unallocated clean energy funding.
Solar analytics firm SunWiz expects 400,000 household battery storage systems to be installed over calendar 2026, reflecting sustained demand despite the subsidy phase-down mechanism that will reduce support levels on a semi-annual basis until the programme concludes in 2030.
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